Chains and heterogens:
PDB Chain Sequences:
>1ak1_ (-) rkkmgllvmaygtpykeedieryythirrgrkpepemlqdlkdryeaiggisplaqiteq qahnleqhlneiqdeitfkayiglkhiepfiedavaemhkdgiteavsivlaphfstfsv qsynkrakeeaeklggltitsveswydepkfvtywvdrvketyasmpederenamlivsa hslpekikefgdpypdqlhesakliaegagvseyavgwqsegntpdpwlgpdvqdltrdl feqkgyqafvyvpvgfvadhlevlydndyeckvvtddigasyyrpempnakpefidalat vvlkklgr